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commit 3528f84037833a799538a2fc48ed30dd09c77b5e
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Author: Mark Wielaard <mark@klomp.org>
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Date: Fri Jan 11 21:52:26 2019 +0100
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readdwarf3.c (parse_type_DIE): Accept DW_TAG_subrange_type with DW_AT_count
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GCC9 generates a subrange_type with a lower_bound and count, but no
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upper_bound attribute. This simply means the upper bound is lower
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plus count.
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diff --git a/coregrind/m_debuginfo/readdwarf3.c b/coregrind/m_debuginfo/readdwarf3.c
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index e9a3816..1b49ba4 100644
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--- a/coregrind/m_debuginfo/readdwarf3.c
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+++ b/coregrind/m_debuginfo/readdwarf3.c
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@@ -3610,6 +3610,7 @@ static void parse_type_DIE ( /*MOD*/XArray* /* of TyEnt */ tyents,
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Bool have_count = False;
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Long lower = 0;
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Long upper = 0;
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+ Long count = 0;
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switch (parser->language) {
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case 'C': have_lower = True; lower = 0; break;
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@@ -3641,7 +3642,7 @@ static void parse_type_DIE ( /*MOD*/XArray* /* of TyEnt */ tyents,
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have_upper = True;
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}
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if (attr == DW_AT_count && cts.szB > 0) {
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- /*count = (Long)cts.u.val;*/
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+ count = (Long)cts.u.val;
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have_count = True;
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}
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}
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@@ -3680,6 +3681,11 @@ static void parse_type_DIE ( /*MOD*/XArray* /* of TyEnt */ tyents,
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boundE.Te.Bound.knownU = False;
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boundE.Te.Bound.boundL = 0;
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boundE.Te.Bound.boundU = 0;
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+ } else if (have_lower && (!have_upper) && (have_count)) {
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+ boundE.Te.Bound.knownL = True;
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+ boundE.Te.Bound.knownU = True;
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+ boundE.Te.Bound.boundL = lower;
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+ boundE.Te.Bound.boundU = lower + count;
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} else {
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/* FIXME: handle more cases */
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goto_bad_DIE;
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